Preparing to buy a 17 inch series 7, have questions first

Hi guys been lurking a while, decided to buy a new laptop. I'm looking at this guy rather seriously,
Series 7 17.3" Notebook | Samsung Office NP700Z7CH
As you can see this is the 17.3 inch series 7 with the new 3rd gen of Intel's i7 line. I have been lurking here and I have a few questions you guys may be able to iron out.
1) I have seen specification tables suggesting the laptop comes with a SATAII HDD. Is this because this laptop doesn't support SATA III, or because Samsung is cheap.
2) I am a performance oriented PC user, as such I will need a SSD. For laptops I am a huge fan of the Samsung 830 series. On Samsung's website I found a page suggesting that opening the 7 series laptops voids their warranties. Can anyone confirm or deny the validity of this statement?
3) Putting in a SSD usually means imaging/re installing windows. In my instance I would prefer re installing windows 7 professional myself. I have seen all sorts of horror stories suggesting that getting the full functionality of the laptop back is a pain in the butt. How can I get all the bells and whistles working on my laptop after I install windows 7 pro?
4) So this laptop has a small amount of nand flash on the motherboard designed to speed up boot times. Somewhere I saw a post suggesting that I could not use this feature in conjunction with True Crypt. This is a laptop and it will be traveling around with me, if it gets stolen I want the person who took it to have a miserable time trying to access my data. Why is this feature incompatible with my go to program for drive encryption?
5) Every now and then I break down and want to throw down with a few of my friends in some online games. How hot can i expect this thing to get while in 3d applications? On a side note how loud can the fan get when using 3d applications
6) a 256 GB SSD is a terrible place to store my movie collection so I have preemptively purchased this thing I found recommended in a thread here
SATA 2nd HDD Hard Drive Caddy for 9.5mm Universal CD / DVD-ROM Optical Bay | eBay has anyone had trouble installing/using caddies such as these?

Thanks for your help I really look forward to getting my questions answered and getting this thing. Would be happy to send some reviews and guides your way after I get this thing.

 

Using your numbering:
2. Does anyone make an SATA III HDD? SATA II is much faster than the disk's transfer speed. I would expect the interface to support SATA III. Samsung do not encourage users to unscrew the backs of their computers but, so far, there are no seals to break. Any damage you cause is your problem (be careful to not strip the screw heads).
3. Use the supplied Samsung Recovery Solution to make a backup of the system software and drivers before you remove the HDD. Then use that backup to install the drivers and software that you want using the Samsung Software Manager.
4. I presume you mean ExpressCache. If you are going to install an SSD then you don't need ExpressCache and can probably reformat it to be usable storage. This thread may help you understand ExpressCache.
5. Samsung usually provide fairly good cooling systems.
6. People have done that type of swap in some of the recent models. However, it's hard to comment about the feasibility in a new model until someone tries.

John